From owner-freebsd-current@FreeBSD.ORG Sun Aug 19 19:16:51 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6B8B516A419 for ; Sun, 19 Aug 2007 19:16:51 +0000 (UTC) (envelope-from dwmalone@maths.tcd.ie) Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [IPv6:2001:770:10:300::86e2:510b]) by mx1.freebsd.org (Postfix) with SMTP id 50C0913C458 for ; Sun, 19 Aug 2007 19:16:50 +0000 (UTC) (envelope-from dwmalone@maths.tcd.ie) Received: from walton.maths.tcd.ie ([134.226.81.10] helo=walton.maths.tcd.ie) by salmon.maths.tcd.ie with SMTP id ; 19 Aug 2007 20:16:48 +0100 (BST) Date: Sun, 19 Aug 2007 20:16:47 +0100 From: David Malone To: Anish Mistry Message-ID: <20070819191647.GA59444@walton.maths.tcd.ie> References: <200708191147.10340.amistry@am-productions.biz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200708191147.10340.amistry@am-productions.biz> User-Agent: Mutt/1.5.6i Sender: dwmalone@maths.tcd.ie Cc: freebsd-current@freebsd.org Subject: Re: Can't create TCP connections to certain IP addresses X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 Aug 2007 19:16:51 -0000 On Sun, Aug 19, 2007 at 11:46:52AM -0400, Anish Mistry wrote: > tcpdump.txt contains a failed connection. tcpdump-good.txt contains > a succeeded connection. As you say, the SYN packet is being sent, but no reply be being received. Can you run a tcpdump on your router/firewall and see if the SYN packets are being recieved (and forwarded) and check if the SYN ACK packets are getting back that far? David.